Opposing to inner split

摘要

PROBLEM TO BE SOLVED: To provide a rotor of motor in which rotor vibration and noise are reduced, parts count is reduced, and manufacturing cost is lowered.;SOLUTION: The rotor comprises a permanent magnet 4, a first rotor core 2a fitted with a rotating shaft 3 provided in a center, a second rotor core 2b, and a buffering member 5 disposed in an air gap part between the first rotor core 2a, the second rotor core 2b and the permanent magnet 4. The first rotor core 2a is fitted from one end of the rotating shaft 3, the buffering member 5 is inserted inside of the permanent magnet 4 while compressing and then a first convex part 4a and a second convex part 4b moved 90° in the circumferential direction are engaged with a fitting grooves 5b, 5c of the buffering member 5, and further then the permanent magnet 4 and the buffering member 5 are fitted on the first rotor core 2a from the other end of the rotating shaft. The second rotor core 2b is engaged with fitting grooves 5d, 5e with a second anti-rotation stopper 2b1 and a first anti-rotation stopper 2a1 staggered 90° in the circumferential direction and is abutted against the first rotor core 2a.;COPYRIGHT: (C)2002,JPO